Fracking multiple casing exit laterals

Abstract

A method of fracking multiple laterals sequentially is described. It allows the drilling rig to be moved off site as the laterals are fracked. Thereafter, they can all be produced simultaneously. The laterals begin from a main lateral that is already oriented in the producing zone and preferably exit in a coplanar manner so as to extend immediately into the producing formation.

1. A completion method for a wellbore extending from a surface, comprising:
 providing at least three laterals from an existing wellbore; 
 providing downhole equipment to allow selective sequential access to said laterals without using a work string in the wellbore; 
 removing any drilling or completion rig from the surface at the wellbore; 
 fracking said laterals sequentially after removing said rig. 
 
   
   
     2. The method of  claim 1 , comprising:
 sequentially delivering different plugs to land in said downhole equipment adjacent a predetermined lateral of said laterals. 
 
   
   
     3. The method of  claim 1 , comprising:
 producing said laterals simultaneously after said fracking. 
 
   
   
     4. The method of  claim 1 , comprising:
 providing each lateral subsequently produced at a higher location in the well than previously drilled laterals. 
 
   
   
     5. The method of  claim 1 , comprising:
 spanning the exit of each lateral after a first lateral with a pair of packers and a ported sub in between for selective access to said straddled lateral. 
 
   
   
     6. The method of  claim 2 , comprising:
 sequentially fracking all laterals with a pressure truck at the wellhead. 
 
   
   
     7. The method of  claim 2 , comprising:
 producing said laterals simultaneously after said fracking. 
 
   
   
     8. A completion method, comprising:
 drilling at least three laterals from an existing wellbore with a rig; 
 providing downhole equipment to allow selective sequential access to said laterals; 
 fracking said laterals sequentially; 
 spanning the exit of each lateral after a first lateral with a pair of packers and a ported sub in between for selective access to said straddled lateral; 
 sequentially delivering bigger plugs to actuate progressively higher ported subs to access laterals in sequence moving uphole for fracking. 
 
   
   
     9. The method of  claim 8 , comprising:
 sequentially isolating laterals already fracked with each plug dropped. 
 
   
   
     10. The method of  claim 9 , comprising:
 blowing a plug from a lowermost packer to obtain access to a lowermost lateral for fracking it. 
 
   
   
     11. A completion method for a wellbore extending from a surface, comprising:
 providing at least two coplanar laterals in a wellbore; 
 providing downhole equipment to allow selective sequential access to said laterals without using a work string in the wellbore; 
 removing any drilling or completion rig from the surface at the wellbore; 
 fracking said laterals sequentially after removing said rig. 
 
   
   
     12. The method of  claim 11 , comprising:
 sequentially delivering different plugs to land in said downhole equipment adjacent a predetermined lateral of said laterals. 
 
   
   
     13. The method of  claim 11 , comprising:
 producing said laterals simultaneously after said fracking. 
 
   
   
     14. The method of  claim 11 , comprising:
 exiting from a first lateral to create the second coplanar lateral. 
 
   
   
     15. The method of  claim 11 , comprising:
 spanning the exit of each lateral after a first lateral with a pair of packers and a ported sub in between for selective access to said straddled lateral. 
 
   
   
     16. The method of  claim 12 , comprising:
 sequentially fracking all laterals with a pressure truck at the wellhead. 
 
   
   
     17. The method of  claim 12 , comprising:
 producing said laterals simultaneously after said fracking. 
 
   
   
     18. A completion method, comprising:
 drilling at least two coplanar laterals in a wellbore with a rig; 
 providing downhole equipment to allow selective sequential access to said laterals; 
 fracking said laterals sequentially; 
 spanning the exit of each lateral after a first lateral with a pair of packers and a ported sub in between for selective access to said straddled lateral; 
 sequentially delivering bigger plugs to actuate progressively higher ported subs to access laterals in sequence moving uphole for fracking. 
 
   
   
     19. The method of  claim 18 , comprising:
 sequentially isolating laterals already fracked with each plug dropped. 
 
   
   
     20. The method of  claim 19 , comprising:
 blowing a plug from a lowermost packer to obtain access to a lowermost lateral for fracking it.